Improvement in water-proof thresholds



UNITED Srafrs ATENE EEieE.

A. IIEAVENER, OF PLAN, ILLINOIS.

IMPROVEMENT IN WATEHlUROOF l'l-lHSl-IOLDS.

hipccilieation forming part ol' Letters Patent No. 3613,99?, dated November 25, 18612.

T0 @ZZ whom it may concern:

Be it known that I, A. IIEAVENER, of Plano, in the County of Kendall and State of Illinois, have invented a new and useful Iniprovenient in Thresholds, the purpose ol' wh ich is to prevent rain from being driven in underwhich neath or at the sides ol' outside doors, improvement or invention I terni a Waterproof threshold;7 and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this speer lieation, in which Figure l is a vertical, Fig. 2 a horizontal, and Figs. 3 and 1I are transverse, sections.

The saine parts in different sections are shown in different positions by saine letters, as follows:

A A are door'janibsgfB, edge of door, open C, plate on door; D, cavity in bottoni of door; E, threshold; F, door-sill; G, valve, hung to threshold with waterproof hinge; II H, supporters to valve; I, hinge; J, spring on valve;

K, groove or channel in threshold under valve;

L, hole through threshold.

rIhe nature of iny invention consists in a threshold composed of cast-iron or other metal, so constructed that when the door is open it answers all the purposes ot' an ordinary inetal threshold, and when the door is closed it answers for the purpose of excluding rain, as stated above.

I construct niy threshold about threefourths of an inch -in thickness, and the shape and width of an ordinary one, and secure it to the door'sill, under the door, as shown at E. Along the top, about one-eighth or' an inch from the outside or front of the threshold, running parallel with it, is a groove or channel, as shown at Ii, say one-hall' inch deep and three-fourths of an inch Wide, leaving the front part about oneeighth of an inch thick and one-half of an inch high, the upper edge of which is niade in circular l'orrn, to forni part of the hinge, as shown at I. Lyingupon the top, running parallel with and covering the groove K, is the valve G, the lront edge of which is also inade in circular forni to cover the outside or convex side of the cir cular portion of the threshold. Upon the under side of the valve G- is a plate, secured by rivets or otherwise, extending the entirelength ol' the valve, the l'ront edge ot' which plate is niade in a circular forni also, but in an opposite direction to, so as to tit the inside or concave ofthe circular portion ofthe valve, with space enough between these two parts to ad init of' the circular portion of the threshold, these three parts thus forming the hinge, as shown at I. 'Underneath the valve G, in the groove Ii, are supporters, as shown at H H, upon which the valve rests when the door is open. About the center ot' the door, and at the bottoni ofthe groove l, is a hole through the threshold, connectingl also with a hole through the door-sill, as shown at L. Upon the top ot' the valve, at the end opposite the hinges upon which the door hangs, is a spring', secured by a rivet to the valve, as shown at J. rIJhe bottoni outside corner of the door planed off in a circular or concave forni, as seen at D, which circle is large enough to allow the valve G to rise and l'all while the door is closed. Upon the outside of the door, at the bottom, is a nietal plate, about one inch wide and extending the whole width of the door.

The operation of' my threshold is as follows: \Vl1en the door is open, it has the appearance ol" an ordinary threshold, the valve lying down, as shown by Fig. ft. vVhen the door is closed, the plate C strikes the spring J, causing the valve G to turn up into the cavity D, where it is held with the top pressing against the plate C by the spring J, as shown by Fig. b. Should rain be driven in at the sides ol' the door, it follows down the rabbet until it reaches the threshold, where it is arrested by the groove or channel K and conducted to the hole L, where it escapes to the outs-ide of the building.

`What I claini as my invention, and desire to secure by Letters Patent, ism

l. The valve G, with hinge I and spring J, as described.

2. The groove or channel Ii, as described, and for the purpose specified.

A. HEAVENER.

XVitnesses:

A. STEWARD, @REEL GREEN. 

